1) The game isn't provably fair for players since the betid is used in generating your roll. If you make a big bet and were due to win, the site can easily just delay your bet for a fraction of a second, process someone else's bet first (or insert one of their own) and give you a different betid. That will give you a different roll, which you might lose. They can keep doing this until you get a losing roll.
2) Similarly it isn't provably fair for investors.
3) The investment model seems broken. For 0.1 BTC you get 0.001% of the profits. That would be fair if the bankroll was 10,000 BTC but I very much doubt it is. Suppose the true bankroll is 1,000 BTC. That means the site is paying out 10,000 times 0.001% or just 10% of their profits to investors, and taking 10% commission on that. The net result is that the site only pays out 9% of their profits and keeps the remaining 91%. That would be fair if the site themselves had bought the other 90,000 "shares", and 9,000 BTC in a cold wallet to back that up with, but that seems unlikely. I mean there's nothing wrong with this model, but it's a very bad deal indeed for investors compared to other sites.
4) I don't see any proof of solvency. Where's the cold wallet?
5) OP seems to have bought his forum account. RandyFolds didn't write like that. Buying accounts with positive trust for the purpose of running a site that claims to be provably fair for players and investors but isn't should set off alarm bells.